The tax charged on salaries received from employment is known as income tax.Everyone is allowed to earn a certain amount of money which is exempted from tax.This amount is called tax relief.If a person earns above this amount,he has to pay a percentage of the excess as in- come tax.Take the example of a man earning (?) 25 000 per year and contributing (?) 5000 to the CPF(Central Provident Fund).If he is allowed tax relief on the first (?) 3000 of his income,he will be taxed on